Siemens simatic et200sp - Reading measured values from user data cyclically

Reading and processing measured values
6.3 Reading measured values from user data cyclically
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
40 Manual, 12/2015, A5E36061895-AA
6.3
Reading measured values from user data cyclically
Requirement
● STEP 7 is open.
● AI Energy Meter 480VAC ST is configured.
Scaling of measured values in the user data
Since the value range of 16-bit values is often smaller than the value range of the physical
value, a scaling factor is supplied together with the basic value in the user data for the
respective measured or calculated values. You determine the actual value of the measured
variable with the following formula:
Actual value of measured quantity = measured value in the user data x 10
scaling factor
Procedure
To read measured values from the user data cyclically, proceed as follows:
1. Read the relevant measured value from the input data.
2. Observe the scaling factor at scaled measured values and convert the read measured
value using the scaling factor.